Readout for simple and precise analog acoustic impact initialization

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dc.contributor.authorŠotner, Romancs
dc.contributor.authorPolák, Ladislavcs
dc.contributor.authorJeřábek, Jancs
dc.contributor.authorLahiri, Abhirupcs
dc.contributor.authorJaikla, Winaics
dc.coverage.issue1cs
dc.coverage.volume11cs
dc.date.accessioned2021-11-12T22:56:36Z
dc.date.available2021-11-12T22:56:36Z
dc.date.issued2021-11-08cs
dc.description.abstractAn economic concept of acoustic shock wave sensing readout system for simple computer processing is introduced in this work. Its application can be found in precise initialization of the stopwatch from the starter sound, handclap or gun in competitive sport races but also in many other places. The proposed device consists of several low-cost commercially available components and it is powered by a 9 V battery. The proposed device reliably reacts on incoming acoustic shock wave by generation of explicit impulse having controllable duration. It significantly overcomes basic implementations using only a microphone and amplifier (generating parasitic burst instead of defined and distinct impulse) or systems allowing a limited number of adjustable features (gain and/or threshold of the comparator-our concept offers the adjustment of gain, cut-off frequency, threshold level and time duration of active state). In comparison with standard methods, the proposed approach simplifies and makes sensing device less expensive and universal for any powder-based starting gun (without necessity to adapt starting gun). The proposed device, among others, has the following features: impulse duration can be controlled from hundreds of mu s up to 2.3 s, the gain range of linear part of processing from 6 to 40 dB and open-collector output compatible with 5 V TTL or 3.3 V CMOS logic. The initialization has been tested in the range from tens of centimeters up to four meters. In order to highlight the important spectral components, the spectral character of the signal can be optimally reduced by a low-pass filter. The quiescent power consumption of the designed simple analog circuit reaches 90 mW. Several use cases, response of the designed system on gunshot signature, talking, hand-clapping and hit on the sensing microphone, are studied and compared to each other. Simulation and experimental results confirm functionality of the realized system.en
dc.formattextcs
dc.format.extent1-16cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationScientific Reports. 2021, vol. 11, issue 1, p. 1-16.en
dc.identifier.doi10.1038/s41598-021-01090-zcs
dc.identifier.issn2045-2322cs
dc.identifier.other173087cs
dc.identifier.urihttp://hdl.handle.net/11012/202252
dc.language.isoencs
dc.publisherSpringer Naturecs
dc.relation.ispartofScientific Reportscs
dc.relation.urihttps://www.nature.com/articles/s41598-021-01090-zcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2045-2322/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectAcoustic shock waveen
dc.subjectanalog signal processingen
dc.subjectgunshot initializationen
dc.subjectsingle event activationen
dc.subjectTTL/CMOS compatibilityen
dc.titleReadout for simple and precise analog acoustic impact initializationen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-173087en
sync.item.dbtypeVAVen
sync.item.insts2022.03.16 12:52:21en
sync.item.modts2022.03.16 12:14:58en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav radioelektronikycs
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav telekomunikacícs
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